Charging stand



FIG. 1 is a front perspective view of a charging stand showing our new design;

FIG. 2 is a front-bottom perspective view thereof;

FIG. 3 is a front-top perspective view thereof;

FIG. 4 is another front perspective view thereof; and,

FIG. 5 is a front elevation view thereof.

The broken lines in the drawings illustrate elements of the charging stand that form no part of the claimed design. 

CLAIM The ornamental design for a charging stand, as shown and described. 